Blizzard is adding 3 new tabards in Patch 10.1.5. We have a Sons of Hodir tabard, a new Scourge tabard with the Forsaken W3 logo, and more.
This is the Sons of Hodir tabard recently added in Wrath Classic, I think.
A new Scourge tabard of sorts with the Warcraft 3 logo was added in Patch 10.1.5. This one has some clipping issues in the latest 10.1.5 PTR build.
The final third tabard is themed after time travel. Maybe it’s from the new megadungeon or Time Rifts.